To give rooms an aesthetic, uniform look, Type DDG-VA diffusers may also be used for extract air.

How to make an aluminum double deflection grille?

In order to make a high quality double deflection grille, Ventech people introduce a whole production line with advanced stamping, punching machines which are operated by experienced workers.

All cores and frames are made by high-efficient machines, then comes to the installation line, we ventech also enjoy the wholly automotive squeezing machines.

Before polishing and filling the putty in the gaps, the air diffuser should be washed for 10mins then baked for30mins. Power coated is arranged behind the polishing step, by using totally-closed powder finishing line and parching space, the perfect diffuser rolls off the products line and ready to be packed, QC is the priority during each step of the mass productions. We have professional QC to check quality before products go to next step.

Optional Accessories

· Clips

· A: installation clip, used for connecting the diffuser/ grille to the celing or wall.

· B: damper fixing clip, used for connecting the diffuser/ grille to the damper.

· Coner protection

· Holes and screw

· Insteady of clips, some people prefer punching holes on frame, and instal the diffuser/ grille with screw.

Damper(can be powder coating)

· OBD-VA, gear manual

· OBD-VB, screw manual

Notice: The above accessories are optionals. Without any specified, we deliver the products without any accessories.

Customized-made in size below:

· Sizes: Customized-made in size:

· Neck size:customized-made in size

· Height: 45mm

· Face size= neck size+60mm

Technical data:

Double deflection grille

standard size H/L(mm)

effective area(m²)

air volume (m³/h)

200x100

0.013

150

200x150

0.020

200

250x100

0.017

160

250x150

0.025

250

300x150

0.030

300

300x200

0.040

450

500x250

0.090

810

600x300

0.149

1400

750x300

0.185

1800

1000x500

0.373

3500

assumed velocity is 2.5m/s

Color:

· Ral classic color.

· -standard Ral 9016 or 9010

· -other colors optional.

· Anodized

· Matt or smooth surface

Package:

· pack in carton, pallect, container.

· 10pcs/ctn without damper

· 5pcs/ctn with damper

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